Place whole beets in a foil-lined baking dish. Drizzle with 1 tablespoon olive oil, and sprinkle with salt and pepper. Cover tightly with more foil.
Bake 45-60 minutes, or until a knife inserts easily.
When the beets are cool enough to handle, peel and cut into chunks.
Place beets, 3 tablespoons olive oil, sherry wine vinegar, and honey in a blender. Puree until smooth and velvety, 30-45 seconds.
Whisk in tarragon. Season to taste with salt and pepper.
Set aside while searing scallops. (Puree can be made 2 days ahead. Let come to room temperature before serving.)
SCALLOPS
Thoroughly dry* scallops with paper towels or a dishtowel.
Season scallops with kosher salt and pepper on both sides.
Heat 1 tablespoon olive oil in a large, nonstick skillet over medium-high heat.
Add about ⅓ of the scallops. You don't want to overcrowd the pan. Sear no more than 2 minutes on each side.
Scallops should be caramelized and crusted on the outside, and tender and not quite opaque in the center.
Place seared scallops on a paper towel-lined dish and tent with foil. Continue to sear scallops in 2 more batches, adding olive oil as needed.
Serve scallops warm with roasted beet puree. Garnish with minced tarragon, pea shoots, and sliced green onion, as desired.
Notes
*The scallops need to be dry, dry, dry. If they’re not dry, they will not sear. There will be a puddle in your pan instead, and the scallops will steam.